Which of the following curve is an isotherm?
Correct answer: D. A hyperbolic curve
- A. A downward sloping curve
- B. A straight vertical line
- C. An upward sloping curve
- D. A hyperbolic curve
Explanation
PV=nRT, where nRT are constants in isothermal process (no temperature change) so graph D is the valid answer.
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About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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